Mosquito Bite / Blood (56)
|This photo is actually a two part story, please look at the workshop for part two in this sequence.|
The hairly leg is part of my body and you see that her belly is nice and swollen from the meal she just had.
How many kinds of mosquitoes are there?
About 3000 species of mosquitoes have been described on a world-wide basis. Approximately 150 are known to occur in North America. The term "Mosquito State"; is appropriate for New Jersey because 63 species of mosquitoes have been found within its boundaries, to date. Scientists group species by genus on the basis of the physical characteristics they share. The 3000 mosquito species found in the world are divided among 28 different genera. The genus Aedes contains some of the worst pests. Many members of the genus Anopheles have the ability to transmit human malaria. Ten different genera occur in New Jersey including: Aedes, Anopheles, Culex, Culiseta, Coquillettidia, Psorophora, Orthopodomyia, Uranotaenia, Toxorhynchites and Wyeomyia. It is sometimes more convenient to group mosquitoes by the breeding habitat they use. The major habitat groups found in New Jersey include: "Snowpool Mosquitoes", "Floodwater Mosquitoes", "Swamp Breeding Mosquitoes" and "Container Breeding Mosquitoes".
Why do mosquitoes bite?
Mosquitoes belong to a group of insects that requires blood to develop fertile eggs. Males do not lay eggs, thus, male mosquitoes do not bite. The females are the egg producers and "host-seek" for a blood meal. Female mosquitoes lay multiple batches of eggs and require a blood meal for every batch they lay. Few people realize that mosquitoes rely on sugar as their main source of energy. Both male and female mosquitoes feed on plant nectar, fruit juices and liquids that ooze from plants. The sugar is burned as fuel for flight and is replenished on a daily basis. Blood is reserved for egg production and is imbibed less frequently.
Why do mosquitoes leave welts when they bite?
When a female mosquito pierces the skin with her mouthparts, she injects a small amount of saliva into the wound before drawing blood. The saliva makes penetration easier and prevents the blood from clotting in the narrow channel of her food canal. The welts that appear after the mosquito leaves is not a reaction to the wound but an allergic reaction to the saliva injected to prevent clotting. In most cases, the itching sensation and swellings subside within several hours. Some people are highly sensitive and symptoms persist for several days. Scratching the bites can result in infection if bacteria from the fingernails are introduced to the wounds.
Exposure Time: 1/125 sec
ISO Speed Ratings: 200
Focal Length: 100/1 mm
Date Taken: 2005-10-28 07:10